 /*******************************************************************************
  * Copyright (c) 2004, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.osgi.internal.module;

 import org.eclipse.osgi.service.resolver.BaseDescription;
 import org.eclipse.osgi.service.resolver.BundleDescription;
 import org.osgi.framework.Version;

 /*
  * A companion to BaseDescription from the state used while resolving.
  */
 public abstract class VersionSupplier {
     BaseDescription base;
     boolean dropped = false;

     VersionSupplier(BaseDescription base) {
         this.base = base;
     }

     public Version getVersion() {
         return base.getVersion();
     }

     public String getName() {
         return base.getName();
     }

     public BaseDescription getBaseDescription() {
         return base;
     }

     // returns true if this version supplier has been dropped and is no longer available as a wire
 boolean isDropped() {
         return dropped;
     }

     // sets the dropped status. This should only be called by the VersionHashMap
 // when VersionSuppliers are removed
 void setDropped(boolean dropped) {
         this.dropped = dropped;
     }

     /*
      * returns the BundleDescription which supplies this VersionSupplier
      */
     abstract public BundleDescription getBundle();

     public String toString() {
         return base.toString();
     }
 }

